package com.wyhgs.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wyhgs.reggie.common.R;
import com.wyhgs.reggie.dto.DishDto;
import com.wyhgs.reggie.entity.Category;
import com.wyhgs.reggie.entity.Dish;
import com.wyhgs.reggie.entity.DishFlavor;
import com.wyhgs.reggie.service.CategoryService;
import com.wyhgs.reggie.service.DishFlavorService;
import com.wyhgs.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @author 宛远鸿
 * @version 1.0
 */
@Slf4j
@RestController
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
    log.info(dishDto.toString());
    dishService.saveWithFlavor(dishDto);
        //清理所有菜品的缓存数据
//       Set keys = redisTemplate.keys("dish_*");
//       redisTemplate.delete(keys);
//清理某个分类下面的菜品缓存数据
        String key ="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);
return R.success("新增菜品成功");
    }


    /**
     * 菜品分类分页查询
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        //构造分页构造器
        Page<Dish>pageInfo=new Page<>(page,pageSize);
        Page<DishDto>dishDtoPage=new Page<>();
        //构造条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name!=null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");
        List<Dish> records=pageInfo.getRecords();
        List<DishDto> list=records.stream().map((item)->{
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item ,dishDto);
            Long categoryId = item.getCategoryId();//分类id
            //根据id分类对象
            Category category = categoryService.getById(categoryId);

            if (category!=null) {
                String categoryname = category.getName();
                dishDto.setCategoryName(categoryname);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品信息
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);

        //清理所有菜品的缓存数据
//        Set keys = redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);
//清理某个分类下面的菜品缓存数据
        String key ="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);
        return R.success("修改菜品信息成功");
    }

    /**
     * 删除菜品以及批量
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        log.info("删除菜品，id为：{}",ids);
//        categoryService.removeById(ids);
        dishService.delete(ids);
        return R.success("菜品删除成功");
    }

    /**
     * 菜品启售
     * @param ids
     */
    @PostMapping("/status/1")
public R<String>  Activation(@RequestParam List<Long> ids){
dishService.state(ids,1);
return R.success("菜品已启售");
    }
    /**
     * 菜品停售
     * @param ids
     */
    @PostMapping("/status/0")
public R<String>  Discontinued(@RequestParam List<Long> ids){
        dishService.state(ids,0);
        return R.success("菜品已停售");
    }


//    /**
//     * 根据条件查询对应的菜品数据
//     * @param dish
//     * @return
//     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//        //构造查询条件
//    LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//    queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
//    //添加条件，查询状态为1（启售）的菜品
//    queryWrapper.eq(Dish::getStatus,1);
//    //排序条件
//    queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//    List<Dish> list = dishService.list(queryWrapper);
//    return R.success(list);

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        List<DishDto> dishDtoList=null;
        //动态构造key
        String key="dish_"+dish.getCategoryId()+"_"+dish.getStatus();

        //现在redis中获取缓存数据
        dishDtoList =(List<DishDto>) redisTemplate.opsForValue().get(key);

        if (dishDtoList != null) {
//如果不存在，直接返回，无需查询数据库
        return R.success(dishDtoList);
        }

        //构造查询条件
    LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
    //添加条件，查询状态为1（启售）的菜品
    queryWrapper.eq(Dish::getStatus,dish.getStatus());
    //排序条件
    queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
    List<Dish> list = dishService.list(queryWrapper);
         dishDtoList=list.stream().map((item)->{
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item ,dishDto);
            Long categoryId = item.getCategoryId();//分类id
            //根据id分类对象
            Category category = categoryService.getById(categoryId);

            if (category!=null) {
                String categoryname = category.getName();
                dishDto.setCategoryName(categoryname);
            }
            //当前菜品id
            Long dishid = item.getId();
            LambdaQueryWrapper<DishFlavor> dishDtoLambdaQueryWrapper = new LambdaQueryWrapper<>();
            dishDtoLambdaQueryWrapper.eq(DishFlavor::getDishId,dishid);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(dishDtoLambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());
        //如果不存在，需要查询数据库，将查询到的菜品数据缓存到Redis
redisTemplate.opsForValue().set(key,dishDtoList,60, TimeUnit.MINUTES);

        return R.success(dishDtoList);
}

}
